Home / 20,671.34-28,526.45-11,239.88

Finding the Fourth Proportional to 20,671.34, 28,526.45 and 11,239.88

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Solution

The fourth proportional to 20,671.34, 28,526.45 and 11,239.88 is: 15,511.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,671.34 : 28,526.45 = 11,239.88 : x
  2. Step 2: Convert to fraction form
    20,671.34/28,526.45 = 11,239.88/x
  3. Step 3: Cross multiply
    20,671.34x = 28,526.45 × 11,239.88
  4. Step 4: Simplify right side
    20,671.34x = 320,633,675.99
  5. Step 5: Solve for x
    x = 320,633,675.99/20,671.34
  6. Step 6: Final answer
    x = 15,511.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.